http://www.gutenberg.org/ebooks/subject/40414.opds 2024-11-08T19:41:37Z Books about Astrophysics (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-08T19:41:37Z https://sendtokindle.compellingsciencefiction.com/ebooks/73996.opds Stellar atmospheres : A contribution to the observational study of high temperature in the reversing layers of stars Cecilia Payne-Gaposchkin